The local wrecking yard has a late sixties Riviera with five rally wheels that look pretty good to me. Covered by a layer of mud because a river seems to run through the yard when it rain heavy and it has be really raining out here. The yard is Kelseyville Wrecking in Kelseyville, CA, Lake County. I can get more contact information if you need it. I doubt that they would ship, but I can ask if anyone is interested.
